Though recently the Druze-Hezballah alliance happened just before the civil war. The Druze in Lebanon are constantly shifting their alliance to the strongest faction at that moment. Jumblat was part of the 14 March alliance in 2009 Lebanese elections (the guys who made Syrian troops leave Lebanon, anti Assad and Hezballah). Yet as the power in Lebanon was swinging back to Hezballah and Syria favor (before the civil war) he switched sides:
(even if you don't trust the source I remember this happening and I can probably find this from other sources.)
PressTV - Druze leader supports Hezbollah
Assad is increasingly criticized by the Druze leaders recently, but it seems like they still support Hezballah. We'll have to wait and see their reaction to the increasing Hezballah involvement and the current campaign.
I am not sure about the Christians though. It seems they are more or less split in half, half with hezb and half with the 14 march movement. The half that is allied with Hezballah did so before the Syrian civil war though (about a year prior iirc).